Tata McGraw-Hill, 1990
Buku Teks
Ewen, Dale, author
Pearson Prentice-Hall, 2009
Buku Teks
Pollack, Herman W., author
Prentice-Hall, 1964
Buku Teks
by James A. Richards ... [et.al.]
Addison-Wesley Publishing, 1960
Buku Teks
Robertson, Barry C.
John Wiley & Sons, 1981
Buku Teks